1.Ocean pack dry bag is available in different sizes 5L/10L/20L/30L/40L.

2.Multi-exist molds for you to choose. You don't need to spend money to develop molds

1.100% water tight waterproof backpack for men.

2.Can be used as travel and business backpack.

3.Different colors available.

4.Exist molds

1.Easy to use

2.Waterproof, packable

3.Exist mold. You don't need to open new mold yet still can adjust some details